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object Test {
def walk(depth: Int, bias: String): Stream[String] = {
if (depth == 0)
Stream(bias)
else {
Stream.concat(Stream.range(1, 100).map((x: Int) => walk(depth-1, bias + x)))
}
}
def main(args: Array[String]) {
println("Length: " + walk(3, "---").length)
}
}
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